# $Id: PKGBUILD 191961 2013-08-02 00:55:05Z allan $
# Maintainer: Allan McRae <allan@archlinux.org>

# toolchain build order: linux-api-headers->glibc->binutils->gcc->binutils->glibc
# NOTE: libtool requires rebuilt with each new gcc version

pkgname=('gcc' 'gcc-libs' 'gcc-fortran' 'gcc-objc' 'gcc-ada' 'gcc-go')
pkgver=4.8.1
pkgrel=2
_snapshot=4.8-20130725
pkgdesc="The GNU Compiler Collection"
arch=('i686' 'x86_64')
license=('GPL' 'LGPL' 'FDL' 'custom')
url="http://gcc.gnu.org"
makedepends=('binutils>=2.23' 'libmpc' 'cloog' 'gcc-ada' 'doxygen')
checkdepends=('dejagnu' 'inetutils')
options=('!libtool' '!emptydirs')
source=(#ftp://gcc.gnu.org/pub/gcc/releases/gcc-${pkgver}/gcc-${pkgver}.tar.bz2)
        ftp://gcc.gnu.org/pub/gcc/snapshots/${_snapshot}/gcc-${_snapshot}.tar.bz2
        gcc-4.8-filename-output.patch)
md5sums=('e21f259bc4c44e61e19a780ad5badfeb'
         '40cb437805e2f7a006aa0d0c3098ab0f')


if [ -n "${_snapshot}" ]; then
  _basedir=gcc-${_snapshot}
else
  _basedir=gcc-${pkgver}
fi

prepare() {
  cd ${srcdir}/${_basedir}

  # Do not run fixincludes
  sed -i 's@\./fixinc\.sh@-c true@' gcc/Makefile.in

  # Arch Linux installs x86_64 libraries /lib
  [[ $CARCH == "x86_64" ]] && sed -i '/m64=/s/lib64/lib/' gcc/config/i386/t-linux64

  echo ${pkgver} > gcc/BASE-VER

  # hack! - some configure tests for header files using "$CPP $CPPFLAGS"
  sed -i "/ac_cpp=/s/\$CPPFLAGS/\$CPPFLAGS -O2/" {libiberty,gcc}/configure

  # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57653
  patch -p0 -i ${srcdir}/gcc-4.8-filename-output.patch

  mkdir ${srcdir}/gcc-build
}

build() {
  cd ${srcdir}/gcc-build

  # using -pipe causes spurious test-suite failures
  # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48565
  CFLAGS=${CFLAGS/-pipe/}
  CXXFLAGS=${CXXFLAGS/-pipe/}

  ${srcdir}/${_basedir}/configure --prefix=/usr \
      --libdir=/usr/lib --libexecdir=/usr/lib \
      --mandir=/usr/share/man --infodir=/usr/share/info \
      --with-bugurl=https://bugs.archlinux.org/ \
      --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ \
      --enable-shared --enable-threads=posix \
      --with-system-zlib --enable-__cxa_atexit \
      --disable-libunwind-exceptions --enable-clocale=gnu \
      --disable-libstdcxx-pch \
      --enable-gnu-unique-object --enable-linker-build-id \
      --enable-cloog-backend=isl --disable-cloog-version-check \
      --enable-lto --enable-gold --enable-ld=default \
      --enable-plugin --with-plugin-ld=ld.gold \
      --with-linker-hash-style=gnu --disable-install-libiberty \
      --disable-multilib --disable-libssp --disable-werror \
      --enable-checking=release
  make
  
  # make documentation
  cd $CHOST/libstdc++-v3
  make doc-man-doxygen
}

check() {
  cd ${srcdir}/gcc-build

  # increase stack size to prevent test failures
  # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31827
  ulimit -s 32768

  # do not abort on error as some are "expected"
  make -k check || true
  ${srcdir}/${_basedir}/contrib/test_summary
}

package_gcc-libs()
{
  pkgdesc="Runtime libraries shipped by GCC"
  groups=('base')
  depends=('glibc>=2.17')
  install=gcc-libs.install

  cd ${srcdir}/gcc-build
  make -j1 -C $CHOST/libgcc DESTDIR=${pkgdir} install-shared
  for lib in libmudflap libgomp libstdc++-v3/src libitm libsanitizer/asan; do
    make -j1 -C $CHOST/$lib DESTDIR=${pkgdir} install-toolexeclibLTLIBRARIES
  done

  [[ $CARCH == "x86_64" ]] && \
    make -j1 -C $CHOST/libsanitizer/tsan DESTDIR=${pkgdir} install-toolexeclibLTLIBRARIES
  
  make -j1 -C $CHOST/libstdc++-v3/po DESTDIR=${pkgdir} install
  make -j1 -C $CHOST/libgomp DESTDIR=${pkgdir} install-info
  make -j1 -C $CHOST/libitm DESTDIR=${pkgdir} install-info

  make -j1 DESTDIR=${pkgdir} install-target-libquadmath  
  make -j1 DESTDIR=${pkgdir} install-target-libgfortran
  make -j1 DESTDIR=${pkgdir} install-target-libobjc

  # remove unnecessary files installed by install-target-{libquadmath,libgfortran,libobjc}
  rm -r ${pkgdir}/usr/lib/{gcc/,libgfortran.spec}

  # remove static libraries
  find ${pkgdir} -name *.a -delete
  
  # Install Runtime Library Exception
  install -Dm644 ${srcdir}/${_basedir}/COPYING.RUNTIME \
    ${pkgdir}/usr/share/licenses/gcc-libs/RUNTIME.LIBRARY.EXCEPTION
}

package_gcc()
{
  pkgdesc="The GNU Compiler Collection - C and C++ frontends"
  depends=("gcc-libs=$pkgver-$pkgrel" 'binutils>=2.23' 'libmpc' 'cloog')
  groups=('base-devel')
  install=gcc.install

  cd ${srcdir}/gcc-build
  
  make -j1 DESTDIR=${pkgdir} install

  install -d $pkgdir/usr/share/gdb/auto-load/usr/lib
  mv $pkgdir{,/usr/share/gdb/auto-load}/usr/lib/libstdc++.so.6.0.18-gdb.py

  # unfortunately it is much, much easier to install the lot and clean-up the mess...
  rm $pkgdir/usr/bin/{{$CHOST-,}gfortran,{$CHOST-,}gccgo,gnat*}
  rm $pkgdir/usr/lib/*.so*
  rm $pkgdir/usr/lib/lib{atomic,gfortran,go{,begin},iberty,objc}.a
  rm $pkgdir/usr/lib/libgfortran.spec
  rm -r $pkgdir/usr/lib/gcc/$CHOST/${pkgver}/{ada{include,lib},finclude,include/objc}
  rm $pkgdir/usr/lib/gcc/$CHOST/${pkgver}/{cc1obj{,plus},f951,gnat1,go1}
  rm $pkgdir/usr/lib/gcc/$CHOST/${pkgver}/{libcaf_single,libgfortranbegin}.a
  rm -r $pkgdir/usr/lib/go
  rm $pkgdir/usr/share/info/{gccgo,gfortran,gnat*,libgomp,libquadmath,libitm}.info
  rm $pkgdir/usr/share/locale/{de,fr}/LC_MESSAGES/libstdc++.mo
  rm $pkgdir/usr/share/man/man1/{gccgo,gfortran}.1

  # many packages expect this symlinks
  ln -s gcc ${pkgdir}/usr/bin/cc

  # POSIX conformance launcher scripts for c89 and c99
  cat > $pkgdir/usr/bin/c89 <<"EOF"
#!/bin/sh
fl="-std=c89"
for opt; do
  case "$opt" in
    -ansi|-std=c89|-std=iso9899:1990) fl="";;
    -std=*) echo "`basename $0` called with non ANSI/ISO C option $opt" >&2
	    exit 1;;
  esac
done
exec gcc $fl ${1+"$@"}
EOF

  cat > $pkgdir/usr/bin/c99 <<"EOF"
#!/bin/sh
fl="-std=c99"
for opt; do
  case "$opt" in
    -std=c99|-std=iso9899:1999) fl="";;
    -std=*) echo "`basename $0` called with non ISO C99 option $opt" >&2
	    exit 1;;
  esac
done
exec gcc $fl ${1+"$@"}
EOF

  chmod 755 $pkgdir/usr/bin/c{8,9}9

  # install the libstdc++ man pages
  install -dm755 ${pkgdir}/usr/share/man/man3
  install -m644 -t ${pkgdir}/usr/share/man/man3 \
    ${CHOST}/libstdc++-v3/doc/doxygen/man/man3/*.3

  # Install Runtime Library Exception
  install -Dm644 ${srcdir}/${_basedir}/COPYING.RUNTIME \
    ${pkgdir}/usr/share/licenses/gcc/RUNTIME.LIBRARY.EXCEPTION
}

package_gcc-fortran()
{
  pkgdesc="Fortran front-end for GCC"
  depends=("gcc=$pkgver-$pkgrel")
  install=gcc-fortran.install

  cd ${srcdir}/gcc-build
  make -j1 DESTDIR=$pkgdir install-target-libgfortran
  make -j1 -C $CHOST/libgomp DESTDIR=$pkgdir install-nodist_fincludeHEADERS
  make -j1 -C gcc DESTDIR=$pkgdir fortran.install-{common,man,info}
  install -Dm755 gcc/f951 $pkgdir/usr/lib/gcc/$CHOST/$pkgver/f951

  ln -s gfortran ${pkgdir}/usr/bin/f95

  # remove files included in gcc-libs or gcc
  rm ${pkgdir}/usr/lib/lib{gfortran,gcc_s}.so*
  rm ${pkgdir}/usr/lib/libquadmath.{a,so*}
  rm ${pkgdir}/usr/lib/gcc/$CHOST/${pkgver}/{*.o,libgc*}
  rm ${pkgdir}/usr/share/info/libquadmath.info
  rm -r ${pkgdir}/usr/lib/gcc/$CHOST/${pkgver}/include

  # Install Runtime Library Exception
  install -Dm644 ${srcdir}/${_basedir}/COPYING.RUNTIME \
    ${pkgdir}/usr/share/licenses/gcc-fortran/RUNTIME.LIBRARY.EXCEPTION
}

package_gcc-objc()
{
  pkgdesc="Objective-C front-end for GCC"
  depends=("gcc=$pkgver-$pkgrel")

  cd ${srcdir}/gcc-build
  make -j1 DESTDIR=$pkgdir install-target-libobjc
  install -dm755 $pkgdir/usr/lib/gcc/$CHOST/$pkgver/
  install -m755 gcc/cc1obj{,plus} $pkgdir/usr/lib/gcc/$CHOST/$pkgver/

  # remove files included in gcc-libs or gcc
  rm ${pkgdir}/usr/lib/lib{gcc_s,objc}.so*
  rm $pkgdir/usr/lib/gcc/$CHOST/${pkgver}/{*.o,lib*}
  rm $pkgdir/usr/lib/gcc/$CHOST/${pkgver}/include/unwind.h

  # Install Runtime Library Exception
  install -Dm644 ${srcdir}/${_basedir}/COPYING.RUNTIME \
    ${pkgdir}/usr/share/licenses/gcc-objc/RUNTIME.LIBRARY.EXCEPTION
}

package_gcc-ada()
{
  pkgdesc="Ada front-end for GCC (GNAT)"
  depends=("gcc=$pkgver-$pkgrel")
  install=gcc-ada.install

  cd ${srcdir}/gcc-build/gcc
  make -j1 DESTDIR=$pkgdir ada.install-{common,info}
  install -m755 gnat1 $pkgdir/usr/lib/gcc/$CHOST/$pkgver

  ln -s gcc ${pkgdir}/usr/bin/gnatgcc
  
  # Install Runtime Library Exception
  install -Dm644 ${srcdir}/${_basedir}/COPYING.RUNTIME \
    ${pkgdir}/usr/share/licenses/gcc-ada/RUNTIME.LIBRARY.EXCEPTION
}

package_gcc-go()
{
  pkgdesc="Go front-end for GCC"
  depends=("gcc=$pkgver-$pkgrel")
  install=gcc-go.install

  cd ${srcdir}/gcc-build
  make -j1 DESTDIR=$pkgdir install-target-libgo
  make -j1 -C gcc DESTDIR=$pkgdir go.install-{common,man,info}
  install -Dm755 gcc/go1 $pkgdir/usr/lib/gcc/$CHOST/$pkgver/go1

  # Install Runtime Library Exception
  install -Dm644 ${srcdir}/${_basedir}/COPYING.RUNTIME \
    ${pkgdir}/usr/share/licenses/gcc-go/RUNTIME.LIBRARY.EXCEPTION
}